Boring and facing machine for boiler-headers.



W. F. SELLERS, 0. SELLERS, JR. & T. T. COLLINS. BORING AND FACINGMAGHINE EOE BOILER HEADERS.

APPLICATION FILED JULY 1,1909. 961,542,, Patented June 14, 1910.

3 SHEETS-SHEET 1.

5Z4 ATTORNEY.

W. F. SELLERS, 0. SELLERS, Jn.'& T. T. COLLINS. 130mm AND FACING MACHINEron BOILER HEADERS.

APPLIOATION FILED JULY 1,1909. 961 542, Patented June 14, 1910.

3 SHEETS-SHEET 2.

WESSES: mvsurans ZZZ/ ATTORNEY.

W. P. SELLERS, 0. SELLERS, JR. & T. T. COLLINS.

BORING AND FACING MACHINE FOR BOILER HEADER$.

APPLICATION FILED J'ULY 1,1909.

Patented June 14,1910.

3 SHEETS-BHEET 3.

JR 6?? d 1710 W6..- ATTMHEY- UNI E WILLIAM F. SELLERS, OF WILMINGTON,

DELAWARE, COLEMAN SELLERS, JR., OF

PHILADELPHIA, AND THOMAS '1. COLLINS, 0F ENFIELD, PENNSYLVANIA, ASSIGN-ORS TO EDGE MOOR IRON COMPANY, 0]? EDGE MOOR, DELAWARE, A CORPORATION OFDELAWARE.

BORING AND FACING MACHINE FOR BOILER-HEADERS.

Specification of Letters Patent. p t t J ,1

- Application filed'J'uly '1, 1909.

Serial No. 505,327.

To all whom it may concern:

Be it known that we, WILLIAM F. SELLERS, a resident of'VVihnin ton, inthe county of New Castle, State 0 Delaware, COLEMAN SELLERS, Jr., aresident of Philadel hia, in the county of Philadelphia, in the tate ofPennsylvania, and THOMAS T. COLLINS, a resident of Enfield, in thecounty of Montgomery, in the State of Pennsylvania, all

citizens of the United States of America,

have invented a certain newand useful Improvement in Boring and FacingMachines for Boiler-Headers, of which the'following is a true and exactdescription, reference being had to the accompanying drawings, whichform a part thereof.

()ur invention relates to a machine designed for a particular use orservice, to wit, the boring of the tube holes and the facing of the handholes in boiler headers.

the use of internal covers by havlng their inner edges faced off, and itis the object of our invention to provide for the borin of the tubeholes and the internal facing of the hand holes in a rapid economicalmanner.

The nature of our invention will be best understood as described inconnection with the drawings in which,

Figure 1 is a plan view of a drilling and facing machine provided withour improve- "-ments.

Fig. 2 an end elevation thereof. Fig. 3 an enlarged view of a spindleand its tools together with its guiding cylinder and sleeve shown insection. Fig. 4 is a face view of a portion of the header and Fig. 5 a

section on the line 5-5 of Fig. 4. Fig. 6 is a view taken similarly toFig. 4 and showin in full and dotted lines the spindles an facing toolsin the entering and working positions respectively.

A, A, indicates the frame of the machine,

A, A, vertical guideways for the work holdmg table support B.

A A are horizontal guideways for the spindle supporting bar D.

A is a portion of the frame supporting the spindle driving shaft E.

The table support B is moved vertically or transversely to the line ofthe spindles by feed screws B B actuated through bevel wheels B and B bya shaft B having a squared end B through which it can be actuated.

C is the work holding table movable longitudinally on support B as aguidewa and moved as shown by the feed screw C havlng squared end CAlthough for convenience, on account of the shape of the work, the tableC does not extend, and move with reference to the support D, in adirection exactly at right angles to the direction of the spindle, thegeneral direction of the table G on the support B and the movement ofthe table support B in its guides may be said to provide for theadjustment of the work relative to the spindles in two directions, atright angles to each other, and both transverse to the direction of thespindles.

D is the support or frame by means of which the spindles are fed totheir work, it moves'on the guideways A A and is actuated by feed screwsD, D, driven through bevel wheels D D D- D by shaft D which is actuatedby clutch D D, which, when moved by lever d connects the shaft with themain driving shaft E through worm wheel D worm c on shaft 6 worm wheel Eand worm E The shaft E driven by pulley E, has attached to it bevelwheels E"; E, &c., which engage bevel wheels 1 1 &c., and drive theshafts I, I .&c., on which are secured the broad pinions I, I, &c.

J, J, &c., are the tool holding spindles of our machine. In each of.them is secured a boring tool J, which projects equally on both sides ofthe spindle, and also a facing tool J which projects from one side ofthe spindle and, in the case illustrated, has its cutting face on theside farthest from the boring tool. The facing tool extends fartherfromthe center of the spindle than does ner surrounding surface of the,Fpreferably oval, hand holes. As shown 1n lgs. 1 and 6, the facing toolsJ and the splndles J are so arran ed that the facing tools always extendpara el to each other. The spindles -J are each secured by screws H to ashaft ways are securedto the frame D and are formed with slots F, F,throu h which extend ins G, G, secured to bus ings G.

L, &c., are levers pivoted on guideways F at E At one end they connectwith the pins G and at the other end with screws M, supported onstandards N, and actuated by hand wheels M.

The header K is secured on the table 0, shown in Fig. 1, and is formedwith two rows of tube and hand holes K K, 70, is, each tube having acorres ondmg and concentric hand hole and eac such air of holes lying inopposite parallel sur aces of the header as shown.

K represents the surface faced at the margin of each of the holes K, It.

By preference we secure the header on the table 0 so that the surfacecontaining the hand holes will be next to the spindles.

- spindles will not interfere with the When the header is being securedto the table the frame D is retracted so that the lacing of the headerand then one row of ho es, for example, those marked K, K, are broughtinto a proximately concentric reglstration with t e spindles. In doingthis the support B is raised or lowered so as to bring the holes to theroper vertical level, an

then the table C, 1s shifted by its feed screw to effect the necessaryhorizontal registration. The frame D, carrying with it the spindles, isthen, through t e screws D, and actuatin mechanism described, movedtoward t e header until the boring tools J have passed through the handholes K. It is then necessary to move the table C'transversely to thespindles to bring the latter to one side of the centers of thecorresponding holes K and K, to permitthe facing tools to pass throughthe holes K. Where the holes bein faced are oval the facing tools shouldor arily be brought into, or near, parallelism with the lon er axes ofthe holes and where, as is usua the holes K are elon ated in thedirection of the rows in whic they extend, the facing tools J 2 shouldbe brought into the same plane at the time of entrance, as shown in Fig.6. In Fig. 6 the header K and spindles J are shown in the workingpositions in full lines. The dotted liIlG'POSltlOll of the header K inFig. 6 is that in which the tools J'= when in the full line position maybe entered into the work, by the longitudinal adjustment of the table 0on the sup ort B. When the facing tools have passe through the handholes the table C is again shifted to bring the holes concentric withthe s indles J and the tools are then further fe forward until theboring tools J enter the tube holes K and in passing through them borethem for the reception of the tubes. The frame D and the tool spindlesare then retracted until the edges of the facin tools J 2 are in contactwith the under si e of the metalsurrounding the hand holes K and thetools are then actuated to face off the underside of these hand holes.It is preferable, in

doing .the actual work, not to depend on the feed of the frame D, andfor this reason we Suppl the hand feeding mechanism consisting o thescrew M actuated by the hand wheel M and acting throu h the lever L andthe spindle J on the sha t H. The boring and facing of each hole beingthus nicely controlledby hand after the common feed mechanism actingthrough the frame D has brought the tools into operative position.

It will be readily understood by those skilled in the art that ourinvention' is not limited to the specific form and arrangement of theparts shown. We consider it preferable to have the spindles lyinhorizontally and to have the facing too situated as shown with referenceto the boring tool on the spindle, but the important features of theinvention are those by which we are enabled by a series of spindles eachhaving a borin and facing tool to accomplish the descrfiied boring andfacin of the tube and hand holes and convenient y introduce and retractthe spindles and tools.

, Having now described our invention, what we claim as new and desire tosecure by Letters Patent is,

1. A boring and facing machine for boiler headers having in combinationa series of spindles each s indle havin a boring tool secured to it an afacing too extendin out radially from it, the facing tools 0 the seriesof spindles bein set parallel to each other; means for rotating andfeeding said s indles, a work holding table and means or shifting saidtable transversely to said spindles so as-to enable the facing tools tobe entered into and withdrawn from the header.

2. A boring and facing machine for boiler headers having in combinationa series of spindles each spindle having a boring tool secured to itnear its end and facing tool extending out radially from it, and havingits cutting edge set in the direction away from the end of the s indle,the facin tools of the series of spindl each other, means for rotatingand feeding es being set para el to.

radially from it, said said spindles, a Work holding table and means forshifting said table transversely to said spindles so as to enable thefacing tools to be entered into and withdrawn from the header.

3, A boring and facin machine for boiler headers having in com ination aseries of spindles each s indle having a boring tool secured to it an afacing tool extendin out acing tools 0 the series of spindles being setarallel to each other, .means for rotating t e spindles simultaneo'usly,means for feeding the spindles to their work simultaneously, means forfeeding eachspindle to its work independently, a work holding table andmeans for shifting said table transversely to' said spindles so as toenable the facing tools to be entered into and withdrawn from theheader.

4. A boring and facing machine for boiler headers having in combinationa series of spindles each aving a boring tool secured to it and a facingtool extending radially from it, said facing tools of the series ofspindles being set so as to be parallel to each other, means forrotating the s indles simultaneously, means for feeding t e spindles totheir work simultaneously, means for feeding each s .indle to its workindependently; a work ho ding table and means for shifting saidtableparallel to the direction in which the facing tools extend when saidtools are in the same plane so as to enable the facing tools to beentered and withdrawn from the header, and means for shifting the tabletransversely to said direction, whereby different rows of holes may bebrought into line with the spindles.

WM. F. SELLERS. 7

COLEMAN SELLERS, JR.

THOMAS T. COLLINS.

Witnesses:

ARNOLD KATZ, D. STEWART.

